CZ300017B6 - Stripping roller - Google Patents

Abstract

The present invention relates to a stripping roller (1) of a spindleless spinning machine separating mechanism comprising a pair of collars (2, 3) and a cylindrical body (4) disposed therebetween. Both the collars (2, 3) are provided with grooves (10), being skew relative to the axis (10) of rotation of the stripping roller (1) and deflecting relative to the stripping roller (1) direction of rotation toward outer face (11) of both the collars (2, 3).

Description

Technical field

BACKGROUND OF THE INVENTION The present invention relates to a combing roller of an open-end spinning machine comprising a pair of collars provided with at least one groove on the circumferential portion and a cylindrical body provided with an opaque coating between the collars.

BACKGROUND OF THE INVENTION

In the open-end spinning machines, a combing roller is used to open the fibers from the sliver, where a toothed wire or needle opener covering is placed on the basic cylindrical body and the collars are limited on the faces to seal the combing cavity. Operating clearance is necessary between the cylindrical surface of the collars and the cavity of the combing roller, as well as between the faces and the body of the opener device. In these gaps, during operation, fibrous dust and impurities piled up from the pattern are deposited, these unwanted elements being introduced into these joints by leaks and various turbulences of process air flowing through the spinning unit. From time to time, these unwanted elements are released, creating knots or dirt, and if they get back into the yarn, they cause defects. Sometimes their accumulation causes the operating gaps to fill up completely, the rotation of the combing roller slows down, possibly even burning.

Various technical solutions are used to reduce clogging of the combing roller faces. In the area of the cells, various suction holes are introduced into the cavity of the combing roller, or the actual collars are provided with transverse grooves or helical grooves provided on the outer faces of the collars.

However, the suction openings themselves become clogged from time to time and it has been found that neither the transverse grooves or the spiral grooves solve the problem perfectly because if the fiber material enters the joint between the collar and the spinning body cavity by rubbing against the wall of the collar and collar packs into a rtopek that is difficult to escape from the joint and even when loosened, it deteriorates the quality of the yarn after spinning.

The object of the present invention is to solve the sealing of the combing roller faces while minimizing the adverse effects described.

The essence of the technical solution

These drawbacks are largely eliminated and the face sealing is improved with a combing roller of an open-end spinning machine consisting of a pair of flanges having at least one notch on the circumference and between the flanges of the arranged opaque cylindrical body according to the present invention. The grooves are arranged in a non-rotational manner on the cylindrical surface of the collars relative to the axis of rotation of the combing roller and, with respect to the direction of rotation of the combing roller, they divert from the direction of rotation to the outer face of the collars.

For a good effect, it is important that the minimum angle of offsets between the axis of rotation and the slope of the groove is between 10 and 45

It has been found that, with respect to efficiency, the groove width should be at least 2 mm and the depth at least 0.5 mm. · Ί’Ζ 500017 Bň

In the case of a plurality of grooves, it is important for the uniform effect that the grooves are distributed regularly around the circumference of the collars;

with

For production reasons, it is advisable that the groove bottom is rounded at the corners with a minimum radius (JJ min.

^{1 ()} Overview of the drawings

BRIEF DESCRIPTION OF THE DRAWINGS The invention will be explained in more detail with reference to the drawings, in which: FIG. 1 is a plan view of a combing roller, FIG. 2 is a plan view and FIG. 3 shows a detail of a groove.

DETAILED DESCRIPTION OF THE INVENTION

The combing roller, even in open-end spinning machines, comprises two collars 2, in which a cylindrical body 4 is provided with an opaque coating 5, which is formed by a toothed

It will be appreciated that the coating may also be formed by other conventional means, such as fixed needles and the like. The collars 2, 3 and the cylindrical body 4 pass through an axial bore 8 for receiving the combing roller 1 on a shaft (not shown). On the cylindrical surface 9 of the collars 2, 3 there is always at least one groove 10, which is disposed in relation to the axis of rotation O, and with respect to the rotation direction S of the combing roller 25 k also rotates from the rotation direction S to the outer face 11. In the embodiment according to FIG. 1, two grooves 10 symmetrically arranged, rotated 180 ° relative to each other, are used on each collar 2, 3. However, three 120 ° grooves 10 and the like can also be used. The profile of the groove 10 is chosen such that its width M is at least 2 mm and the minimum depth U is 0.5 mm. The angle and offsets of the O-axis of rotation and inclination K of the groove 10 must be at least 10 ° and should not exceed 45 ° for ease of manufacture. Also, the width M of the groove 10 should not exceed 3 mm and the depth U of the groove JQ should not be such that the bottom J3 of the groove 10 extends below the circumference of the cylindrical body 4 as the slot H) becomes clogged. the grooves 10 are moved to the rotor (not shown), thereby disturbing the yarn formation analogously to the existing combing rollers. Suitably, the minimum width N of the cylindrical surface 9 of the collars 2, 3 is at least 15% of the width of the cylindrical body 4 with the opaque coating 5. For reasons of production, it is advantageous to round the bottom 11 to at least 0.3 mm.

The function of the grooves 10 on the combing roller 1 as it rotates causes air to flow from the outer faces 11. the flange 2,3 to the cylindrical body 4 for the opaque coating 5. Thus, the fibers which have reached the cylindrical surface 9 of the flange 2, 3 eventually into the space at the outer faces 11 of the flange.

2, 3 are sucked through the channel 10 by means of the directed air flow and directed back to the opener cover 5.

Industrial applicability

The combing roller is designed for open-end machines as a replacement for existing combing rollers.

Claims (7)

PATENT N OUR YEARS 1. The combing roller of an open-end spinning machine consisting of a pair of collars (2, 3) provided with at least one groove (10) circumferentially and a cylindrical body (4) arranged between the collars (2) with an opaque coating (5). by this. that the grooves (10) are arranged on the cylindrical surface (9) of the two collars (2, 3) with respect to the rotational axis (O) of the combing roller (1) and are parallel to the rotational direction (S) of the combing roller (1) S) the rotation deflects to the outer face (11) of both collars (2, 3). 2. The combing roller according to claim 1, characterized in that the angle ([alpha]) of the spacers. the axis (O) of rotation and inclination (K) of the groove (10) is in the range of 10 to 45 °. 15 Dec A combing roller according to claim 1 or 2, characterized in that the width (M) of the groove (10) is at least 2 mm. A combing roller according to any one of claims 1 to 3, characterized in that the minimum depth (U) of the groove (10) is 0.5 mm. 5. The combing roller according to claim 1 or 2 or 3 or 4, characterized in that the grooves (10) on the collars (2, 3) are evenly distributed. A combing roller according to any one of claims 1 to 5, characterized in that The minimum width (N) of the cylindrical surface (9) of the collar (2, 3) is at least 15% of the width of the cylindrical body (4). A combing roller according to any one of claims 1 to 6, characterized in that the bottom (13) of the groove (10) is rounded in its corners with a minimum radius of 0.3 mm.